Is Rotation Still a Thing?

Believe it or not, we’re about a month away from a Standard rotation.
Granted, this two-year period has been one of the weirdest in memory. It’s had the pandemic, a lot of bans, and precious little support in terms of attention or high-level events.
As a result of this, I want to take a beat and ask a question which shakes a foundation of buying and selling cards: Does Standard rotation still matter, or is Commander just about the only thing driving card prices these days?
In order to test this hypothesis, I need to think about what’s happened before, and what those prices did. I also want to find cards that were more popular in Standard than they were in Commander.
In September 2021, four sets rotated out: Throne of Eldraine, Theros: Beyond Death, Ikoria: Lair of Behemoths, and Core Set 2021. A good example of a popular card from Standard that didn’t make huge waves in Commander is Shark Typhoon. It’s listed as the 16th most popular card from that set on EDHREC, the database of decks that people bother to type out and upload to.
So if this idea holds true, we should see a downward pressure on the card leading up to September 2021:

A few dollars’ decline, which is in line with expectations. A bit precipitous in late April, but eventually the card recovered nicely. No reprints of any kind for this either.
In September of 2020 we lost Hydroid Krasis

Again, we saw a decline of a few dollars in price, and the low inclusion rate in Commander is why the Krasis is now so impressively cheap. Being in Double Masters 2022 is going to keep prices for it incredibly low, too.
So we know what to look for in the graphs from the past. Does it show up in the current environment?
My first thought was Goldspan Dragon

That’s a pretty clear indicator, and that bump up in June is probably due to Miirym, Sentinel Wyrm
Let’s look at Magma Opus

A pretty clear indicator that it was the flavor of the moment earlier this year, but doesn’t have the sustained play pattern outside of Standard needed to keep a high price. It’s in a paltry 6,000 decks on EDHREC, but consider the competition for this sort of mana cost, even if you can do fun and abusable things in that format to make this easier to cast.
So yes, I think rotation still lowers card prices significantly, but it’s harder to take advantage of that from a value perspective these days. If a card is good in Commander, it’ll be expensive already, though rotation can make it less painfully pricey, like with Goldspan Dragon. Plus, looking at the graph for Hydroid Krasis, I’m inclined to wait on Goldspan and see if I can get in at $10 or less next year.
With all this in mind, there’s just a couple of cards I want to highlight as being worth a think and probably worth picking up as they hit bottom.
Alrund’s Epiphany
Reflections of Littjara
Archmage Emeritus
Oswald Fiddlebender